ABB DSAI 155A Thermo Couple Module

Description

The ABB DSAI 155A Thermo Couple Module is a specialized industrial automation component designed for integrating thermocouple temperature sensors with PLC systems. As part of ABB’s DSAI series of I/O modules, it shares core functionality with related models including DSAI 155 (57120001-HZ) and DSAI 150 (57120001-U), which are established thermocouple input modules. This module enables direct connection of thermocouple temperature sensors to PLCs via external signal processing components such as sensors and transmitters, handling full analog and digital processing of incoming thermocouple signals. Key features include configurable per-channel settings for specific sensor wire types, automatic detection of external AD592 cold junction compensation, and compatibility with a universal backplane using a PCI bus. Enhanced variants may offer added isolation or high-resolution processing for precise temperature monitoring. Thermocouple sensors paired with this module support a wide measurement range, typically from -200 degrees Celsius to 1300 degrees Celsius (or up to 2800 degrees Celsius for specialized types), with fast thermal response times, high measurement accuracy, and robust mechanical durability. Ideal for industrial automation applications requiring reliable temperature data collection, this module serves as a critical bridge between temperature sensing devices and central control systems.